Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-40S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 550mm stroke, G1/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ32 mm
- Stroke550 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-40S
The AirTAC SAIJ32X550-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 402N of push force and 345N of pull force at 0.5 MPa. With a nominal 550mm stroke and a 40mm adjustment range, you can fine-tune the effective travel window down to 510mm during commissioning without swapping out the unit.
This model features a SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance and utilizes PT tapered port threads (G1/8). The extruded aluminum barrel includes sensor grooves on both sides, and the integrated -S magnet is fully compatible with AirTAC CMSE reed and DMSE electronic solid-state switches for precise end-position detection.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-40S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 550 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 27 mm |
| Max stroke | Up to 1000 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×550 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-40S Is Used
Machine Setup Tuning
Dial in the exact 510-550mm end-position during initial commissioning to perfect product handling without machining external stoppers.
Product Changeover
Quickly adapt the cylinder's effective stroke on the packaging line when switching to a different carton size, minimizing downtime.
Variable End-Stop Control
Use the 40mm rear adjustment screw to fine-tune the retract end position for precise ejection or clamping tasks on automated machinery.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-40S the Right Cylinder?
Choose this 32mm bore when your application requires a maximum thrust around 402N at 0.5 MPa; stepping up to a 40mm bore increases that force to 628N. The adjustable stroke is ideal for variable end-stops or product changeovers, saving the cost of external stops. Because the 550mm stroke is relatively long for this bore size, an external guide is recommended to prevent excessive side-loading on the 12mm rod.
When replacing an ISO 15552 cylinder, match the 32mm bore, 550mm stroke, 40mm adjustment, PT G1/8 port, and -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Note that the rear adjuster acts as a travel stop, not a lock; the cylinder will not hold a load without live air pressure, so consider SAIL or BSAI variants if true load-holding is required.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-40S FAQ
At a standard 0.5 MPa operating pressure, this 32mm bore cylinder provides 402N of push force and 345N of pull force. It can deliver up to 724N of push force at 0.9 MPa.
The rear adjuster screw allows you to shorten the effective travel from the nominal 550mm down to 510mm, providing a 510-550mm usable window. This stopper only limits the travel end; it does not lock the load without live air pressure.
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